中文摘要：

为了提高等离子放电对染料的降解效率,研究了Fenton-like/TiO_2耦合催化介质阻挡放电体系对活性艳蓝（X-BR）的脱色效果及降解机理。结果表明,投加Fe^2＋或Fe^3＋与TiO_2组成的耦合催化体系可以显著提高X-BR的脱色率。反应10 min后,紫外可见扫描光谱和阴离子（Cl^-、NO_3^-、SO_4^2-）产量分析表明,介质阻挡放电体系可以有效破环蒽醌发色基团,耦合催化体系不仅强化了蒽醌结构的破坏,同时更加有效地破坏了苯环和萘环结构从而提高了TOC降解率。最后,比较研究了投加Mn^2＋和Cu^2＋对X-BR的脱色效果,在投加浓度均为0.5 mmol/L条件下,两者对X-BR的脱色起到抑制作用,因此,两者不适合作为耦合催化介质阻挡放电体系的添加离子。

英文摘要：

The decomposition of reactive brilliant blue by dielectric barrier discharge,combined with Fenton-like TiO_2,was investigated in order to improve the efficiency. Fe^2＋or Fe^3＋,coupled with TiO_2 was introduced in the discharge system,could enhance the discoloration effectively. After 10 min of treatment,the UVVIS and IC analyses revealed that the discharge destroyed anthraquinones,while the coupled system destroyed benzene and naphthalene,thereby improving the TOC removal rate. Introduction of 0. 5 mmol / L Mn^2＋and Cu^2＋revealed an inhibition effect on the discoloration,showing the unsuitability of these two ions for this process.